Telephone transposition switching box



Mar. 27, 1923. 1,449,904

E. LovE TELEPHONE TRANSPOSITION SWITGHING BOX Filed Aug. 22, 1921 /0veiziaf fnmf am Patented Mar. 27, 1923.

UNITED STATES ERNEST LOVE, OF PRINCE RUPERT, BRITISH COLUMBIA, CANADA.

TELEPHONE TRANSPOSITION SWITCHING BOX.

Application -led August 22, 1921. Serial No. 494,186.

To all whom t may concern:

Be it known that I, ERNEST LOVE, a subject or theKing of Great Britain,residing at Prince Rupert, in the Province of British Columbia, Canada,have invented certain new and useful Improvements in TelephoneTransposition Switching Boxes; and

`I do hereby declare that the following is a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

TheIpresent invention relates to a telephone transposition switchingbox.

The primary object ofthe invention is the provision 0f a device of theabovespecified character for use in transposing long distance telephonelines, either one or two pairs together, also what are known as phantomcircuits and will do the work while conversations are going on over bothpairs and also over the phantom circuit, all at the same time, and willcause no interruption tov service, as the switching is instantaneous,thus allowing the telephone company to do all their transposing onlines, without taking them out of service, which results in the savingof `both time and expense to the company using the device described inthis application.

Another object of the invention is the provision 0f a device such asabove referred to which allows the linemen to proceed with their worksteadily all day irrespective of whether the lines are in use or not,and therefore permits of considerable more transposition work each daywith an additional great saving to the company.

According to the old method of doing transposition work or work of thisnature the transposition between pairs or between two pairs can only bemade while the circuits are not in use, and before the linemen canproceed with the work it is necessary for the linemen to telephone tothe wire chief of the exchange from which the work is started in orderto find if the phantom circuit is in use. It can be plainly seen thatthis method causes considerable delay to the lineman and quite a loss tothe company. This switching box eliminates this loss of time bypermitting the linemen to continue with their work by simply connectingthe apparatus to the wires, and proceeding in the usual manner.

This switching boxl can also be used for changing transpositions fromone type to another or for cutting transpositions out of circuitsaltogether.

Another object of the invention is the provision of ya switch-box forthe above mentioned purposes, which will be comparatively simple andinexpensive to manufacture, re` habile and eilicient in use, and readilyoperate llith the above and other objects in view, the present inventionresides in the novel features of construction, formations, combinations,and arrangements of parts to be hereinafter .more fully described,claimed and illustrated in the accompanying drawing, forming a part ofthe present application; and in, which,

Figure lis a diagrammatic view illustrating the wiring within theswitching box;

Figure 2' is a view of the top plate of the box removed, showing theswitches in side elevation;

Figure 3 is an end View thereof;

Figure 4 is a plan view of the box; and,

Figure l5 is a transverse sectional view taken therethrough.

Referring now to the accompanying drawings, by Corresponding charactersof reference throughout the'several views, the numeral 6 designates ingeneral my improved switching box, which as shown in the drawings forpurpose of illustration, is of a substantially rectangular formation,comprising opposite side and end walls 8 and 9 connected at their loweredges by a bottom 10 and at their upper edges by a removable closure 11.

A series of binding posts 12 are positioned at the opposite ends of thebox, and couductors 13 are connected thereto extending through openingsformed in the box and being terminally equipped at their outer ends withclips 14C by means of which the said device can be connected to thevarious wires o the telephone system, as desired, or the li e.

The top of closure 11 of the switchingbox is provided with alongitudinal opening 15 formed therein, in which is inserted, and heldby means of fastening elements 16, a supporting plate 17.

This supporting plate 17 carries a series of switch elements 18 each ofwhich comprises a supporting bracket 19 having insulating blocks 20attached to the lower end thereof, between which are secured the springlil) switch elements, 21, 22, 23, 24, 25 and 26 which are provided withcontact points 27 adjacent their upper ends. These spring contactmembers 2l to 26 inclusive, are connected, as shown in Figure l, bysuitablel conductors 28, to the before described binding posts l2 and toeach other in a proper and desired manner.

The spring members 23 and 25 are extend ed above the remaining members21, 22,` 24 and 26, as shown in Figure 3, and have their upper endsengaged by the lower operating terminal 29 of an operating lever 30.Obviously when the lever is thrown in the various positions, as shown inthe full and dotted lines in Figure 3, the diii'erent contact points 27will be brought into engagement thus changing the circuit in the desiredmanner.

ln use the clips. 14 are connected to the desired conductors of thetelephone system and the lever 30 operated after live wires have beenlcut in the desired manner to transpose the circuits so that therepairing or other work can be done, on the lines, without interferingwith the ordinary talking circuits and thus permitting the transposingto be done, while conversation is carried on l over the lines.

From the foregoing description taken in connection with theaccompanyingdrawings, it will be manifest that 'a transpositionswitching boX is provided which will fulfil all of the necessaryrequirements of such a device, and it should bel understood in thisconnection, that various minor changes in the specific details ofconstruction can be resorted to within the scope of the appended claims,without departing from the spirit or sacrificing any of the advantagesof the invention.

Having thus fully described the invention, what I claim as new anddesire to secure by Letters Patent is: 1

l. The herein described device, comprising a box, bindingposts at theends of said boX, conductors interconnecting the two sets of bindingpostsand switching elements in said conductors for transposing thecircuits between the binding posts as and for the purposes set forth. n

2. The herein described telephone transposition switching boX includinga housing, binding posts mounted therein and arranged in groups, switchelements mounted within the housing, conductors connecting the bindingposts of one group to those of the other group by way of said switchelements,

whereby .when the switchV elements are in various positions the circuitof the telephone system or the like to which the device is attached willbe transposed.

l3. The herein described telephone transi position switching boXcomprising a housing, binding posts mounted therein, conductors leadingfrom the binding postsv through the housing, attaching clips secured tothe ends vof the conductors, groupsV of separate switch elements mountedwithin the housing, conductors connecting these switch elements to thebinding posts, and means for actuating the separate groups of switchelements independently for transposition of electric A* circuits towhich the clips are attached.

ln witness whereof I have hereunto set my hand.

ERNEST LOVE.

